69W43 Furnace Flame Sensor - For Lennox, Armstrong & Ducane Furnaces - Replaces 69W4301 LB-74940B LB74940B - 2 Pack 3204267 Decreased Suction: Replace if the

Decreased Suction: Replace if the vacuum exhibits reduced airflow or struggles to lift standard debris

" this part may not be compatible

Restores heat generation and provides critical thermal protection

Note: Not compatible with gasoline engines or the newer 2017+ redesigned intake systems

3390719 Dryer Thermal Fuse

69W43 Furnace Flame Sensor - For Lennox, Armstrong & Ducane Furnaces - Replaces 69W4301 LB-74940B LB74940B - 2 Pack 3204267 Decreased Suction: Replace if the69W43 Furnace Flame Sensor Key Features Detects burner flame to enable safe and continuous furnace operation. Constructed with a durable cermet insulator and a corrosion resistant sensing rod. Angled probe design for direct replacement and optimal positioning. Replaces Cross Reference Part Numbers 69W43 69W4301 LB 74940B LB74940B 102431 02 790 801A1 Compatibility & Fitment Designed as a direct replacement part for specific furnace models from: Lennox